Simultaneous wavelength locking of microring modulator array with a single monitoring signal

Dong, Po; Gatdula, Robert; Kim, Kwangwoong W.; Sinsky, J.H.; Melikyan, Argishti; Chen, Young-Kai; Valicourt, G. de; Lee, Jeffrey

doi:10.1364/oe.25.016040

Cited by 31 publications

(10 citation statements)

References 18 publications

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“…Such micro-ring based switches that can establish a connection with any one or a set of multiple wavelengths from a WDM signal require robust wavelength locking scheme. The locking scheme in this problem is different from other approaches [59,60,61,62,63], where a ring resonator or a bank of resonators can lock to a particular or all wavelengths in a WDM signal, but one cannot be certain to which wavelength a particular ring is locked without an external optical spectrum analyzer (OSA). For this we need an absolute wavelength reference on chip to lock any switch node to a given wavelength of choice.…”

Section: Methodsmentioning

confidence: 95%

Multi-wavelength selective crossbar switch

Khope

Saeidi

et al. 2019

Opt. Express

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When I started out at UC Santa Barbara as a PhD student in 2015, there was no funding until the AIM project proposal got accepted. Without funding no work gets done, so first I am grateful to Prof. Rod Alferness for funding me for the first year and Prof. John Bowers for funding me for the rest of my PhD. To John, thanks for giving me complete freedom at work without which I could not have explored so many different areas in research. I enjoyed our conversation in the monthly meetings with Rod, John and Adel. For the first few months of my PhD I spent a lot of time with Adel doing a literature survey, it was an exciting journey in a new field. To Adel, thanks for filtering out the unsound ideas and helping me frame my thoughts. I enjoyed our white board discussions. To Roger, Clint, Takako and Andy at the Datacom meetings for discussions and helpful feedback. To Tin, for the fun we had at the New York Training conference. To Alex, Warren, Eric and Andy for the excellent office environment. To Alex, for inspiring me to get Scuba certified and also for tips on cooking Thai cuisine. To Aranya, for being my climbing buddy. To Sean, Simran Lawrence, Wilson and many others, for the fun time we had at UCSB badminton intramural. To Chirag, for providing helpful advice when needed. Thanks to Nicolas, Geza, Christos, Sarat, Aditya for helpful discussions. I would also like to thank Minh, Tony, Paolo, Yuan and Alan for their helpful advice. Special Thanks to Songtao for help with high speed measurements. Thanks to my Pappa, Mamma and Sairaj for the support during my PhD and for recharge time in India. Finally I would also thank Jeremiah Hebding, Brett Attaway, and SUNY for their foundry services. v

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Section: Methodsmentioning

confidence: 95%

Multi-wavelength selective crossbar switch

Khope

Saeidi

et al. 2019

Opt. Express

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“…Instead of individually controlling actuators separately, in the TED technique all the actuators are controlled simultaneously according to appropriate weights, which are based on eigensolution of the thermally coupled system. Mathematically this implies a deterministic coordinate transformation, which can be applied to any kind of tuning and locking algorithm, based for instance on look-up tables [28], gradient-based [29] [30] and dithering-based techniques [23] [24], as well as multi degree of freedom (DOF) stabilization methods [21].…”

Section: Discussionmentioning

confidence: 99%

Canceling Thermal Cross-Talk Effects in Photonic Integrated Circuits

Milanizadeh

Aguiar

Melloni

et al. 2019

J. Lightwave Technol.

104

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Thermal actuators are among the most consolidated and widespread devices for the active control of photonic integrated circuits (PICs). As a main drawback, mutual thermal crosstalk among actuated devices integrated onto the same photonic chip can affect the working point of the PIC and can reduce the efficiency of automated tuning and calibration procedures. In this work, a strategy to cancel out the effects of the phase coupling induced by thermal crosstalk is presented. In our technique, that we named Thermal Eigenmode Decomposition (TED), all the actuators of the PIC are controlled simultaneously according to the eigensolution of the thermally coupled system. The effectiveness of the TED method is validated by numerical simulations and experiments carried out on coupled microring resonator (MRR) and switch fabrics of Mach-Zehnder interferometers (MZIs). With respect to individual control of phase actuators, where thermal crosstalk can hinder the convergence of automated tuning algorithms, with the TEDtechnique convergence is always reached, requires a lower number of iterations, and is less sensitive to the initial state of the PIC. The proposed TED method can be applied to generic tuning and locking algorithm, can be employed in arbitrary PIC architectures and its validity can be extended to systems where phase coupling is induced by other physical effects, such as mutual mechanical stress and electromagnetic coupling among RF lines.

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“…Single sideband RoF signals could be generated via the IQ structure to achieve a doubled spectral efficiency and thus higher flexibility in wavelength. While MRMs are sensitive to fabrication tolerance and environmental temperature, this can be addressed using feedback control [12].…”

Section: Discussionmentioning

confidence: 99%

Single-Sideband OFDM Transmission via a Silicon Microring IQ Modulator

Lyu

Rusch

et al. 2019

IEEE Photon. Technol. Lett.

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We experimentally demonstrate the generation of a single-sideband orthogonal frequency division multiplexed (OFDM) signal using an on-chip silicon photonics microringbased IQ modulator. Over 18 dB sideband suppression ratio is achieved for the wideband OFDM: 15.7 GHz data band and 2.7 GHz guard band. The 31.4 Gb/s signal was transmitted over 20 km of standard single-mode fiber with a bit error rate below the forward error correction threshold. While single-sideband continuous-wave signals have been produced with such hardware, this is the first demonstration of stable data transmission on the single sideband carrier.

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Simultaneous wavelength locking of microring modulator array with a single monitoring signal

Cited by 31 publications

References 18 publications

Multi-wavelength selective crossbar switch

Multi-wavelength selective crossbar switch

Canceling Thermal Cross-Talk Effects in Photonic Integrated Circuits

Single-Sideband OFDM Transmission via a Silicon Microring IQ Modulator

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